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Case Study: Fuel Filter Supply for a fleet operator in Eastern Europe

Source:Case / Time:2026-09-18

Fuel Filter for A fleet operator in Eastern Europe

A fleet operator came to us with a fuel filter programme for Eastern Europe. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

  • A specification nobody had written down
  • Lead time that slipped twice before bulk started
  • Warranty claims traced back to a single lot

Fuel Filter case study

What was specified

PartFuel Filter
ClientA fleet operator
MarketEastern Europe
Volume2,000 pieces across 6 specifications
Base materialTempered Glass
Sampling rounds2
Delivery window5 weeks from PO to ex-factory
ComplianceTUV

How it was resolved

  1. The specification was rebuilt around Tempered Glass and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Fuel Filter production run

Result

  • 2,000 pieces delivered inside the 5-week window.
  • Unit cost held within 3.0% of the original quotation.
  • Inspection-related rejection stayed under 1.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.

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